Question

我正在尝试配置多线程步骤。我已经按照春季批处理文档。

我的工作配置：

<job id="ordinaryJob" xmlns="http://www.springframework.org/schema/batch" job-repository="jobRepository">
 <step id="Ordinary" xmlns="http://www.springframework.org/schema/batch"> 
   <tasklet transaction-manager="transactionManager"> 
      <chunk **throttle-limit="10**" task-executor="asyncTaskExecutor" reader="itemReader"                               writer="EmployeeWriter" commit-interval="1000" />
   </tasklet> 
  </step>
</job>

当我执行工作时，我得到以下异常。

Exception in thread "main" org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 49 in XML document from class path resource [xmlJob.xml] is invalid; nested exception is org.xml.sax.SAXParseException: cvc-complex-type.3.2.2: Attribute 'throttle-limit' is not allowed to appear in element 'batch:chunk'.
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:404)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:342)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:310)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:143)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:178)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:149)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:212)
    at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:113)
    at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:80)
    at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:123)
    at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:422)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:352)
    at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
    at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
    at controller.XMLJobController.<init>(XMLJobController.java:42)
    at controller.XMLJobController.main(XMLJobController.java:48)
Caused by: org.xml.sax.SAXParseException: cvc-complex-type.3.2.2: Attribute 'throttle-limit' is not allowed to appear in element 'batch:chunk'.
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator$XSIErrorReporter.reportError(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.reportSchemaError(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.processAttributes(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.emptyElement(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(Unknown Source)
    at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:75)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:396)
    ... 15 more

我可以在没有throttle-limit参数的情况下执行作业。我想知道为什么我无法添加。什么是任务执行器中的并发限制属性。

谢谢， Sivaprakash

Answer 1

如果您调查Spring Batch xsd，则表示throttle-limit是可以与tasklet类型一起使用的属性，而不是chunk

你得到的SAXParseException是相同的：批量中不会出现限制：块

org.xml.sax.SAXParseException：cvc-complex-type.3.2.2：Attribute “throttle-limit”不允许出现在元素“batch：chunk”中。

task-executor属性也是如此，它也属于tasklet，而不是chunk

因此，正确的用法是

<tasklet transaction-manager="transactionManager" throttle-limit="10" task-executor="asyncTaskExecutor"> 
    <chunk reader="itemReader" writer="EmployeeWriter" commit-interval="1000" />
</tasklet>

无法使用spring批处理在多线程步骤执行中配置限制限制

1 个答案: